1910.] NATURAL SCIENCES OF PHILADELPHIA. 495 



brownish yellow, the apices broadly light yellow with a dark brown 

 subterminal ring, this ring about one-half the extent of the pale tip; 

 tibia' yellowish brown; tarsi brown. Wings with a pale grayish 

 suffusion, with brown clouds and seams as follows: larger ones at 

 the stigma, at t be t ip of Sc and origin of Rs, midlength of the subcostal 

 cell and at the base of this cell; paler brown clouds at the tips of 

 most of the veins, the cross-veins and deflections seamed with this 

 same color. Venation: Sc long, extending to about one-third the 

 length of the sector; basal deflection of R i+i very long, the cross-vein 

 r-m correspondingly reduced. 



Abdominal tergites dark brown, the segments a little brighter at 

 their bases; sternites dull yellow. 



Habitat. — Costa Rica. 



Holotype, 9, Cartago, Costa Rica, September 17, 1909 (P. P. 

 Calvert). 



Type in the collection of the American Entomological Society. 



This species differs from all the members of the insignis group 

 (insignis, lineata, numenius, plumbeipleura, ibis, et al.) in the peculiar 

 pattern of the prseseutum. 

 Geranomyia subinsignis sp. n. (Extra-Iimital.) 



Related to insignis Loew; thorax grayish with three broad dark 

 brown stripes; femora with a broad subterminal brown annulus; 

 wings grayish with extensive brown markings. 



Female. — Length, excluding the rostrum, 5.7-0 mm.; wing, 0.4 

 mm.; rostrum, about 2.2-2.5 mm. 



Rostrum moderately elongated, black. Antennae black. Head 

 black, passing into dark gray on the vertex; a narrow silvery median 

 line extends from the front to the occiput. 



Pronotum dull brownish yellow with a dark brown median line. 

 Mesonotal prseseutum light gray with three dark brown stripes, nearly 

 subequal in width and much broader than the pale interspaces; 

 middle stripe narrowed behind, barely attaining the suture; lateral 

 stripevS narrowed in front, broadened behind, crossing the suture 

 and suffusing the scutal lobes; median area of the scutum and the 

 scutellum pale dirty brown; postnotuin brown. Pleura brownish 

 plumbeous. Halteres yellow, the knobs brown. Legs with the 

 coxee and trochanters pale yellow-; femora light brown, passing into 

 light yellow at the tip, this pale area including a broad dark brown 

 subterminal annulus; in the Panaman paratype, the brown annulus 

 is very broad, encroaching upon the yellow tip; the pale area at the 

 tip is about one-half the extent of the brown annulus, which in turn 



